import path from "node:path";
import { execSync } from "node:child_process";
import dayjs from "dayjs";
import { defineConfig, loadEnv } from "vite";
import Uni from "@dcloudio/vite-plugin-uni";
// @see https://uni-helper.js.org/vite-plugin-uni-pages
import UniPages from "@uni-helper/vite-plugin-uni-pages";
// @see https://uni-helper.js.org/vite-plugin-uni-layouts
import UniLayouts from "@uni-helper/vite-plugin-uni-layouts";
// @see https://github.com/uni-helper/vite-plugin-uni-platform
// 需要与 @uni-helper/vite-plugin-uni-pages 插件一起使用
import UniPlatform from "@uni-helper/vite-plugin-uni-platform";
// @see https://github.com/uni-helper/vite-plugin-uni-manifest
import UniManifest from "@uni-helper/vite-plugin-uni-manifest";
// @see https://unocss.dev/
import UnoCSS from "unocss/vite";
import AutoImport from "unplugin-auto-import/vite";
import { visualizer } from "rollup-plugin-visualizer";
import ViteRestart from "vite-plugin-restart";
import postCssPxToRem from "postcss-pxtorem";

// https://vitejs.dev/config/
export default ({ command, mode }) => {
	// console.log(mode === process.env.NODE_ENV) // true

	// mode: 区分生产环境还是开发环境
	console.log("command, mode -> ", command, mode);
	// pnpm dev:h5 时得到 => serve development
	// pnpm build:h5 时得到 => build production
	// pnpm dev:mp-weixin 时得到 => build development (注意区别，command为build)
	// pnpm build:mp-weixin 时得到 => build production
	// pnpm dev:app 时得到 => build development (注意区别，command为build)
	// pnpm build:app 时得到 => build production
	// dev 和 build 命令可以分别使用 .env.development 和 .env.production 的环境变量

	const { UNI_PLATFORM } = process.env;
	console.log("UNI_PLATFORM -> ", UNI_PLATFORM); // 得到 mp-weixin, h5, app 等

	const env = loadEnv(mode, path.resolve(process.cwd(), "env"));
	const {
		VITE_APP_PORT,
		VITE_SERVER_BASEURL,
		VITE_DELETE_CONSOLE,
		VITE_SHOW_SOURCEMAP,
		VITE_APP_PROXY,
		VITE_APP_PROXY_PREFIX,
	} = env;
	console.log("环境变量 env -> ", env);

	return defineConfig({
		envDir: "./env", // 自定义env目录

		plugins: [
			UniPages({
				exclude: ["**/components/**/**.*"],
				routeBlockLang: "json5", // 虽然设了默认值，但是vue文件还是要加上 lang="json5", 这样才能很好地格式化
				// homePage 通过 vue 文件的 route-block 的type="home"来设定
				// pages 目录为 src/pages，分包目录不能配置在pages目录下
				// subPackages: ['src/pages-sub'], // 是个数组，可以配置多个，但是不能为pages里面的目录
				dts: "src/types/uni-pages.d.ts",
			}),
			// UniLayouts(),
			UniPlatform(),
			UniManifest(),
			// UniXXX 需要在 Uni 之前引入
			Uni(),
			{
				// 临时解决 dcloudio 官方的 @dcloudio/uni-mp-compiler 出现的编译 BUG
				// 参考 github issue: https://github.com/dcloudio/uni-app/issues/4952
				// 自定义插件禁用 vite:vue 插件的 devToolsEnabled，强制编译 vue 模板时 inline 为 true
				name: "fix-vite-plugin-vue",
				configResolved(config) {
					const plugin = config.plugins.find((p) => p.name === "vite:vue");
					if (plugin && plugin.api && plugin.api.options) {
						plugin.api.options.devToolsEnabled = false;
					}
				},
			},
			UnoCSS(),
			AutoImport({
				imports: ["vue", "uni-app"],
				dts: "src/types/auto-import.d.ts",
				dirs: ["src/hooks"], // 自动导入 hooks
				eslintrc: { enabled: true },
				vueTemplate: true, // default false
			}),

			ViteRestart({
				// 通过这个插件，在修改vite.config.js文件则不需要重新运行也生效配置
				restart: ["vite.config.js"],
			}),
			// h5环境增加 BUILD_TIME 和 BUILD_BRANCH
			UNI_PLATFORM === "h5" && {
				name: "html-transform",
				transformIndexHtml(html) {
					return html.replace(
						"%BUILD_TIME%",
						dayjs().format("YYYY-MM-DD HH:mm:ss"),
					);
				},
			},
			// 打包分析插件，h5 + 生产环境才弹出
			UNI_PLATFORM === "h5" &&
				mode === "production" &&
				visualizer({
					filename: "./node_modules/.cache/visualizer/stats.html",
					open: true,
					gzipSize: true,
					brotliSize: true,
				}),
		],
		define: {
			__UNI_PLATFORM__: JSON.stringify(UNI_PLATFORM),
			__VITE_APP_PROXY__: JSON.stringify(VITE_APP_PROXY),
		},
		css: {
			postcss: {
				plugins: [
					postCssPxToRem({
						rootValue: 37.5,
						propList: ["*"],
					}),
				],
			},
		},

		resolve: {
			alias: {
				"@": path.join(process.cwd(), "./src"),
				"@img": path.join(process.cwd(), "./src/static/images"),
			},
		},
		server: {
			host: "0.0.0.0",
			hmr: true,
			port: Number.parseInt(VITE_APP_PORT, 10),
			// 仅 H5 端生效，其他端不生效（其他端走build，不走devServer)
			proxy: JSON.parse(VITE_APP_PROXY)
				? {
						[VITE_APP_PROXY_PREFIX]: {
							target: VITE_SERVER_BASEURL,
							changeOrigin: true,
							rewrite: (path) =>
								path.replace(new RegExp(`^${VITE_APP_PROXY_PREFIX}`), ""),
						},
					}
				: undefined,
		},
		build: {
			// 方便非h5端调试
			sourcemap: VITE_SHOW_SOURCEMAP === "true", // 默认是false
			target: "es6",
			// 开发环境不用压缩
			minify: mode === "development" ? false : "terser",
			terserOptions: {
				compress: {
					drop_console: VITE_DELETE_CONSOLE === "true",
					drop_debugger: true,
				},
			},
		},
	});
};
